Yes, dark side of the moon is one amazing recording.
From -Wkipedia
Pink Floyd used some of the most advanced recording techniques of the time, including multitrack recording and tape loops. Analogue synthesisers were given prominence in several tracks, and a series of recorded interviews with staff and band personnel provided the source material for a range of philosophical quotations used throughout. Engineer Alan Parsons was directly responsible for some of the most notable sonic aspects of the album, including the non-lexical performance of Clare Torry.
The Dark Side of the Moon was an immediate success, topping the Billboard 200 for one week.
It subsequently remained on the charts for 741 weeks (fourteen years), the longest duration of any album in history. With an estimated 45 million units sold, it is Pink Floyd's most commercially successful album and one of the best-selling albums worldwide. It has twice been remastered and re-released, and has been covered by several other acts.
